Dubelman A M, Forbes A R
Anesth Analg. 1979 Jul-Aug;58(4):306-8. doi: 10.1213/00000539-197907000-00009.
Two matched groups of eight patients were given hyperbaric tetracaine (12 mg) intrathecally. One group was instructed to cough vigorously three times after injection. The mean upper level of analgesia by pinscratch technique was the sixth thoracic dermatome in both groups. We conclude that three vigorous coughs do not influence the spread of spinal anesthesia.
将两组各8名匹配的患者进行鞘内注射高压丁卡因（12毫克）。一组患者在注射后被要求用力咳嗽三次。通过针划法测得的两组平均镇痛上界均为胸6皮节。我们得出结论，三次用力咳嗽不会影响脊麻的扩散。
